Does have an assumable VA mortgage (per the listing). https://www.redfin.com/TX/Dallas/4512-Sycamore-St-75204/home...

I'd consider your appreciation YOY, mortgage amortization, and your housing expense savings i.e. instead of paying $2,200 for an apartment now you're paying $1000/month since your roomates are helping cover mortgage. 

Definitely look into HELOC/cash out options, but if those don't work in terms of rates or availability I'd suggest using the existing cashflow from your multi to offset a primary mortgage, and then find a primary with an ADU.

BTC is the original but an infinite number of copies can be created, cheaper and safer.

My dilemma is the mortgage is a little over 50% of my take home pay from my W-2 and I am worried that I am biting off more than I can chew.

Quote from @Susan Mumford: Any thoughts about Lee Arnold's Income Notes Digital Training Program for flipping mortgage notes?

This might be a rookie mindset is it bad I don't care for cash-flow at the moment in my eyes if someone helping me pay down my mortgage and build equity I'm okay with that.

GC can end up cheaper bcus they already have established network with subcontractors. still, it's good to seek out those plumbers, flooring, painters etc to build your own estimate too.

-house hack or rent out your vacant units out to lower your monthly mortgage payment.

This is when you buy a primary residence (1 to 4 units, the more the better) which you can usually get for a very low down payment and get the best interest rates on and then rent out other units and/or bedrooms within your unit to pay for the mortgage and other expenses.